Company Filing History:
Years Active: 1976-1977
Title: Donny R Walker: Innovator in Magnetic Ink Character Recognition
Introduction
Donny R Walker is a notable inventor based in Carrollton, TX (US). He has made significant contributions to the field of magnetic ink character recognition, holding 2 patents that showcase his innovative spirit and technical expertise.
Latest Patents
One of Walker's latest patents is the MICR data lift system. This invention provides a magnetic ink character reading system where multi-element read heads are arranged in a staggered formation. The system detects data signals from the analog responses of the read heads and converts them into discrete logic level signals, controlled by a dynamically adjustable threshold. The logic level signals are sampled in response to independent data sample signals, which are phase locked to the data rate of each read head. This results in NRZ (non-return-to-zero) data signals that are synchronized to a common fixed frequency, accurately representing the characters on documents passing through the read heads.
Another significant patent is the dual edge detector for bar codes. This invention allows printed bar codes, whether biphase modulated or bar-no-bar modulated, to be read as they pass an optical sensor. The generated video signal is shaped to maintain a constant reference level within a consistent amplitude envelope. The signal is then differentiated to create a bipolar waveform with character-dependent properties. This waveform is used to establish a digital synchronization signal, defining the time periods during which bar signals may occur. The waveform is separated into positive and negative halves, which are integrated and compared to a predetermined threshold to detect the presence of a bar.
Career Highlights
Donny R Walker is associated with Recognition Equipment Incorporated, where he continues to develop innovative solutions in the field of data recognition technology. His work has significantly advanced the capabilities of magnetic ink character recognition systems.
Collaborations
Walker has collaborated with notable individuals in the industry, including Charles T Kao and James O Lafevers. Their combined expertise has contributed to the development of cutting-edge technologies in data recognition.
Conclusion
Donny R Walker's contributions to the field of magnetic ink character recognition through his patents and collaborations highlight his role as an influential inventor. His innovative solutions continue to impact the industry positively.